Quick start – Xylem FL700 FLUORIDE METERS User Manual
Page 4
FL700 V1.1 11/07
4
Quick Start
The following procedure describes a quick-start for the FL700 using the standard TISAB
chemistry. Detailed operating instructions can be found on the pages that follow.
Preparation
1.
Remove the FL700, electrode module and sample cup from its box. Remove caps from
module.
2.
Fit the electrode module onto the end of the meter body, making sure that the slots line
up correctly, and tightly turn the module retaining ring to secure the assembly.
3.
Wipe the fluoride crystal and reference junction with a damp tissue
Calibration
1.
Prepare a 1 ppm fluoride standard and TISAB reagent, or use pre made mixed TISAB
and 1 ppm standard
2.
Pour 15 – 20 mls of this standard solution into the sample cup
3.
Rinse the end of the FL700 module in TISAB solution and wipe thoroughly with paper
tissue
4.
Place the FL700 into the 1 ppm standard
5.
Switch the instrument on using the ON/OFF key. The instrument will now go through its
internal calibration
6.
1.0 ppm reading will stabilizes in ~35 seconds and the instrument will enter HOLD
mode
7.
When in HOLD mode press the CAL key and hold until 1.0 ppm and CAL appear in the
display. Release the CAL key
8.
Wait until the display stops blinking; the instrument will enter the HOLD mode
9.
The instrument is now calibrated and ready for use
Measurement
1.
Prepare unknown solution by adding TISAB reagent to the sample. Thoroughly wipe
the end of the FL700
2.
Place the FL700 into the prepared unknown sample
3.
If the display is indicating HOLD press the HOLD key to enter the Measure mode (the
HOLD display will switch off)
4.
After ~ 35 seconds the instrument will display the value of the unknown concentration
5.
The readings can be stored in memory by pressing the MODE/HOLD key for ~ 3
seconds
Storage and maintenance
1.
After use, store the electrode in an analyzed sample
2.
Thoroughly wipe the sensor with paper tissue. The flat ended sensors can be wiped
vigorously
3.
The fluoride module can be replaced once the automatic calibration no longer
sufficiently calibrates the instrument
4.
Other maintenance information is provided in a later section of this guide